Congratulations! The winner of the giveaway is indeed selected randomly and announced automatically. However, the reward payment is processed manually by the sponsor. Your reward of $318 WAIV has just been transferred to your account:

One of the key benefits of WAIV rewards is that they are deposited in liquid form, allowing for instant conversion into major cryptocurrencies like BTC, ETH, LTC, and HIVE.

Good luck the next time as well!